<template>
  <div class="login">
    <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">Vue3后台管理系统</h3>
      <el-form-item prop="username">
        <el-input
          v-model="loginForm.username"
          type="text"
          size="large"
          auto-complete="off"
          placeholder="账号"
        >
          <template #prefix><svg-icon icon="user"/></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          size="large"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter="handleLogin"
        >
          <template #prefix><svg-icon icon="password"/></template>
        </el-input>
      </el-form-item>

      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>

      <el-form-item style="width:100%;">
        <el-button
          size="large"
          type="primary"
          style="width:100%;"
          @click.prevent="handleLogin"
        >
          <span>登录</span>
        </el-button>
      </el-form-item>

    </el-form>

    <!-- 底部 -->
    <!-- <div class="el-login-footer">
      <span>某某某 <a href="http://www.XXX.XXX" target="_blank">某某某</a>某某某</span>
    </div> -->
  </div>
</template>

<script setup>
  import {ref} from 'vue'
  import requestUtil from '@/util/request'
  import store from '@/store'
  import qs from "qs"
  import {ElMessage} from "element-plus"
  import router from "@/router"
  import Cookies from "js-cookie";
  import { encrypt, decrypt } from "@/util/jsencrypt";

  const loginRef = ref(null)

  const loginForm = ref({
    username: "",
    password: "",
    rememberMe: false
  })

  const loginRules = {
    username: [{ required: true, trigger: "blur", message: "请输入您的账号"}],
    password: [{ required: true, trigger: "blur", message: "请输入您的密码"}]
  };

  const handleLogin =() => {
    loginRef.value.validate(async(valid) => {
      if(valid){
        // 勾选了需要记住密码，设置在cookie中设置记住用户名和密码
        if(loginForm.value.rememberMe) {
          Cookies.set("username", loginForm.value.username, {expires: 30});
          Cookies.set("password", encrypt(loginForm.value.password), {expires: 30});
          Cookies.set("rememberMe", loginForm.value.rememberMe, {expires: 30});
        } else {
          // 否则移除
          Cookies.remove("username");
          Cookies.remove("password");
          Cookies.remove("rememberMe");
        }

        let result = await requestUtil.post("login?" + qs.stringify(loginForm.value))
        let data = result.data;
        if(data.code == 200) {
          const token = data.authorization
          const menuList = data.menuList;
          const currentUser = data.currentUser;
          //console.log("menuList=" + menuList);
          store.commit('SET_MENULIST', menuList);
          store.commit('SET_TOKEN', token);
          store.commit('SET_USERINFO', currentUser);
          router.replace("/")
        } else {
          ElMessage.error(data.msg)
        }
      } else {
        //console.log("验证失败")
      }
    })
  }

  function getCookie() {
    const username = Cookies.get("username");
    const password = Cookies.get("password");
    const rememberMe = Cookies.get("rememberMe");
    loginForm.value = {
      username: username === undefined ? loginForm.value.username : username,
      password: password === undefined ? loginForm.value.password : decrypt(password),
      rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
    };
  }

  getCookie();
</script>

<style lang="scss" scoped>
a{
  color: white
}
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/login-background.jpg");
  background-size: cover;
}
.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}
.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;
  .el-input {
    height: 40px;
    input {
      display: inline-block;
      height: 40px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 40px;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 40px;
  padding-left: 12px;
}
</style>